Art of making corrugated fasteners



June 30, 192s.

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v. RA'GONA ART OF MAKING CORRUGATED FASTENERS S'Sheets-Sheet 2 June 30,1925.

Filed Sept. 29. 1921 x *S my O "QI qb.. N

v25 Sheets-Sheet 5 V.RAGONA ART OF MAKING CORRUGATED FASTENERS FiledSept. 29 3921 June 30,1925.

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Patented June 30, 1925.

VINCENT nAGoNA; or `New. YORIL'NY., assreENoa 'rpo vmeer MANUFACTURINGor BROGKLYNNEW'YORK,Aconronsirronior NEW' YORK,

earaer :ART or MAKING ccnriUeaTis-ro .rasmENna-s.

application ined september 29, i921. serial, No. 504,049.'

7'0 all whom t may concern.'

Be it known tliatl, irNcicNr RAGONA, a citizen of the UnitedV States,residing at the city of New'York, borough of Brooklyn, county of Kings,and State of New York, have invented a certainnew and'usef'ulArtofMaking CorrugatedFasteners, of which the following is a specification.

This invention pertains to the art of inaking corrugated fasteners, theobject being' to so fabricate the metal'stock as to impart the desiredformationthereto without ydrznving the temper of said ystock by heating`the metal, while at the'same'tinie facilitatingtlie necessaryoperations so as to produce the character ofl fastener desired in aneconomical manner. i'

In the art of making corrugated fasteners it is desirableto avoidgrinding "the metal at any stage in theA fabrication of the metal forthe reason tliatvthe frictional contact of the' metal stock with thegrinding `sui'- face results in an undesirable-heating of theA ymetal,with a consequenttendencyto draw the temper of lthe metal to such anextent as to renderit too soft, and in. addition thereto, such grindingiop'eration is relativelyslow, and it -sets free a certain amount ofdust which isseri'ously objectionable in the workroom. y j

According `to the present invention, the metal stock is treated alongthe resulting drivingedgeso as to produce reversed bevels thereon `bya'shaving or1 paring operation,`

the utility of whicliis tosharpen the driving edge without drawing thetemper of the 1netal; and should the shaved stock be utilizedsubsequently in the production of saw `tooth fasteners or divergentfasteners, ythe preliminary removal of the 'metal-by the shaving orparing process reducesthe quantity of metal i'equired'tofbe 'cut awayfor-the production of the-saw teeth on the Idriving edge of thefastener, whereby the production f lof the fasteners is facilitated andeconomy of manufacture is attained.

'In practically carrying out the shaving operation I employ means fordirecting the metal stock in a path intermediate a plurality of knives,the latter -being positioned. at opposite sides of 'said vpath andAbeing inclined to thejline ofv feed sovas to present the cutting edgesfor, contact Vwith the respectiveilateralfaces lofthe stock adjacent oneedge thereof. `Y Said 'knives' act to pare for shave vtheimetal from thestockwith ay continuous operation vso that thiny narrow ribbons orshavings of metal `aie`pared'of the stock and dischargedout off the'path of feed, whereby the stock is beveled Vonfthe opposite lfaces andsuch bevels are wreversi'ely inclined so as to converge toward eachother', -iesulting'by the conjoint acti'onfof theknives 'in a sharpenededge on the -nietal. stock`.

Said knives are mounted in heads'fwhi'ch lin turn are 'fitted forlthe'requiredadjust- -at the angles required ffor'sh'aving the '.metalfrom the stock, andthe!knifelcarryingheads n may be raised or loweredywithrespect to the Y rockable carriers inv 'order to present? the PCE*l knives tov tliee'dge portion. ofthe "metal 'v stock, suoliv adjustmentbeing desirable for 'the required action of thefknilves upon ferentwidths of the'metalstock.` j

l Other functions and advantages the invention will appear' from 'the'.following description takenin connection fwitli the' accompanyingdrawings, 'wherein- Figure l is a diagrammaticview"illusltrat-ingtliestages of operations followediii the productionof corrugated saw toothfasten'ers` according to `.this invention c l yFigure2 is an enlarged viewiinfplan :of the stock shaying mechanism.

Figures 2a and 2 areicrossseotions on the lines Qa-"Va and .2b-2b,respectively, of'Figure VQillustrating the metaltstockfprior to theshaving' operation and subsequentlythereto.

Figure 3 is a side elevation of the-stockknives, the adjustable yli'ea'd'tl'ier'e'foi',`and

the rockable `carrier lfor said head.v j

Figures 6, `7 and `8 are views 'infsection partly 1nl elevation Lillustrating the 'succes- V'sivesteps forthepioduct'ion of saw toothfasteners 'from the-'shavedniet-al-y stock. j

- Figures 9, l0 and `1l areviews "ofthe/dif 95 i shaving mechanismlookingtoward the right Y ferenttypes ,of fasteners adapted `to be pro-Vduced from 'the shaved lmetal stock. Y The metal 'stock A' isarelatively narrow band ofltempered steel of the required gage and width,indefinite as toilengtli, and Vcon-` tained in a coil oi' reel a, seeFiguiesland 2, `mounted Vin oiadjacenta`V table B ofthe shavingmechanism. Y

Y Said table is provided with a guide chan?` ,nel c bounded bychannel-,forming 'members C C, which ineinbersai'e shown` as plates Ypositioned in parallel'ielatioii and fixidlyY attached to the table. Themembers Vor plates `Vextend lengthwise of' ther table for ,directing themetal stock in a predetermined path, and theyoperate to retain saidstock f "in` the` po'sition required for the shaving actionfofthe knivesD E, the latter being mounted for 'their'cutting edges tobe presented atthenecessary angles into/contactwithftheicmetal stock on theoppositesidesv vvor[faces,thereof andadjacent thatedge of ithefstock4whichvconstitutes the drivingor penetrating edge "of" the fastenerssubsequently produced.l the guide channel c .suitable means, the 4feedmeans being :depicted in Figure'l as a'yset'of co-operating rolls Foperating on I s iaidstock to impart -the feed mot-ion thereto'-,andftoffcorrugate thestockfinv a well known manner, but o twiouslythe means for feeding A the metal stock niay be changed l.asy desired.

` ColoperfatingV with the; tableflr are stock guides f positioned in,alineincnt withthe channel. c and operating to-diiect the stock 'to Saidchannel als"` itis drawn loff the reel. a

Divided with wipers for Contact with the "Vandto directthe stock afterVit passes out of inetalstockfo'r removing therefronidust or`dirtadliering to the'siirfa'ceyofthe metal.

TheknivesDE are positionedatfopposite sides oftheguide channel, and areinclined relatively thereto, whereby said knives are presented forcontact with Vtherespective vsides or facesof said stock adjacent theedge Y thereof. i The Vknives D E are lpositioned one in 'therear oftheother, and said knives are-` ,inclined injopposite d1rections one to theother, one'knif-e D being inclined in one direction vwith"respect to theplane' of the guide channel o, whereas the o'therknife E "is inclined inan oppositedirection `with `ref vver'ence to said plane .of the guidechannel, see FigureQ. '60

- As shown more clearly in'Figures 2' to A5 inclusive, Aeach knife is anelongated blade "vvitli` a cutting edge at the end adjacent the`'channelguide, said knife ,being fittedin an .0 enng d of a head shownas. afblock Gf tained xedly in place bythe carriers, 'the whereby "thevknife is adapted -to be held vthe purposes of a Vsaid spindle. i n n.

There are two head blocks G, and two L Vcarriers H, one for each of thetwo ki'iive'svv I D E, and these cai-ricreare positionedupon he' metalstock is fed continuously with-Y fixidly in position by fa bindinglscrew d sov i as to permit the desiredadjustment: of the y knife by'moving it in -a longitudinal direcl tion'. The head block isfitted'withinfa suitable 'guideway h offa rockable carrier lH, one formof said guideway vand the .form of the head block beingisliown inAFigure 5; the 7 guideway operating to'retain the head block i fromrotative movemeiitiwhile permittingthe head' block and the knife to beadjusted in a vertical direction, for'rwliich: purpose af ScreW'spiDdleI i's-employed. The sci-ewV Y yspindle has' a. swiveled connection, atz' with the carrier H and athreaded connection with the head block,see'Fig'ure 4, said spindle eXteiidin` upwardly from thecai'rier andvbeingp-rovi ed with a cross pini serving handle for readily turning'the tableBat opposite sidesof thechann'el guide for the metalv stock.Each carrieris `90Y shown f as having an arm h attached pivotally 'tothe table by anarbor h2, thelatter serving l `.as the axis of movementfor the carrier so as to make provision foi` movement of the4 car-V'rier kandtliehead block with the knife rela-V tivelyv t0 the channelguide, as a result :of

whicheach knife may be shifted'wi'th respect tothe metal stockswhereby,thefknife acts tocut orshave the metal stocka't a definite. angle,whereas 'the adjustment ofthe knife longitudinally with referenceftfthehead. fblock regulates -the Vdepth` of the-fout! by the s knife intotheA metal stock.- Each pivoted Acarrier is held fixedly, inposit'ionbyfsuitable means,V shown as-screws Jv J", one of'which finds a threadedbearinginthe armh 'of the carrier, `whereas lthe other fsci'e'w is sup-`portedjin a post extendingfupwardly from thel table. It is apparent thescrew J Y may be slackened and screwJradju'sted to shift the carrierandthe lknifefaftei jvliich'the vkscrew J is tightened agai'ns-t-onejoftheehan-V 'nel plates ,"fand VJvll is tightened against the y .Y arm ofthe carrierforjfiXedly"retaining'the *knife in the requiredpositionV forcuttingV a shaving from the surface of,-theginetal stock. A` g 1 Theplates"C Cbounding the channel knivesD Eto act upontheinetalf stock;

.guide are cutaway orslottedatifor vthe i flat in cross section 'withparallelsurfaces,

andl thisstock is `ilrawn b the action of the feedand corrugating rolsfF throughthe Wipers'of. the guides ff` and the channelv i i guide n',thus vfeeding the metal -stockfwith respect to the knives D VSaid knivesyare positionedforthe cuttingedges thereof to.

shave or through `parethemetal stock-"fas it ,is fed i t e "guide o,said. knives being re- Ihead 'blocks and the screws. -The knives are setto cut away the metal in directions inclined to the faces of the stock,the effect being to cut bevels a a? on the faces ofthe stock, as shownin Figure 2b, which -bevels are reversed to each otli-er and converge soas to result in a sharpened edge a3 at the penetrating or driving edgeof the` resulting fastener,

It will be noted that the Vmetal stock is sha-ifed by the knives toproduce the reversed bevels and the sharpened edge thereon while t-hestock is in aA flat condition, and prior to the operation of thecorrugating rollsF upon said stock, sai-d rolls operating to producetraniferse criinps in the metal so as to convert thek fiat metal stockinto a length of corrugated metal.

The metal stock sharpened on one edge by the shaving or paring processand crimped by the action of the cofrrugating rolls is used for theproduction of plain edge corrugated fasteners 'K of the form shownin'Figure 9, it only .being necessary to cut the metal into pieces ofsuitable length after performing the shaving operation and thecorrugatin'g operation there-on, suitable means being providedl forcutting the shaved and corrugated stock transversely and at properintervals.

T he metal stock with its edge shaved and corrugated may, however, befurther manipulated to produce on the shaved edge thereof a desired sawtooth formation so as to result in the production of saw toothcorrugated fasteners L shown in Figure 10. To this end, the metal stockis conducted from the corrugating rolls F of Figure 1 to the sivagingdie M of Figures 1 and 6 and to the cutting dies N O of Figures l, 7 and8. After passing the corrugating rolls F the corrugated metal with theshaved edge is fed by a roll P within a channel g ofthe table. Q, andsaid stock pass-es first beneath the sivaging die M of Figure 6, theoperation of which is to swage the corrugated metal below the sharpenededge @3 so as to produce the bevels m 11, for the saw teeth to besubsequently produced by the dies N O. As the metal stock passes, withan intermittent feed motion, to the dies N O, said stock is firstinclined in one direction and then in an opposite direction, as shown inFigures 7 and 8. The dies N O are each formed with a corrugated face,and said dies act upon the sivagedV metal m n of the stock in a mannerto cnt out the metal and produce on the edge of the corrugated stockcertain saw teeth with bevels in the convex fac-es of the corrugationsso as to result ultimately in a saw tooth formation with a continuous,or substantially continuous, cutting edge. In addition to cutting outthe metal for the formation of saw teeth, the dies (both swaging andcutting) so act upon the metal at the driving edge astro position thepoints of thesaivfteeth in the plane of the lmedial line of thevcorrugated metal,l thus producing fasteners'wliich drive withoutdeflectionv into the wood, either' with the gra-in or across the grainof; the material.

The means herein shown and' describedas dies -M, N, C, for producing thesaw tooth formation upon the driving edge-of thecorrugated metal stockare analogous to the mechanism for the purpose disclosed 1n UnitedSta-tes Patent No. 1,210,416 granted `January 2, 1917, to Cary andBran-d, to

'J une 4,1921, said die rollers being operable `uponthe beveled edgeiat'stock to. impart the-reto the divergent corrugations s sf with theflat-'interniediate web t shown in-Fi'gure 11, subsequent to which thecorrugated sections of the metal are' acted on by swagfing and cuttingdies similar to dies M, N, O, and so organized that said dies sivage andcut out the corrugated metal as to result in the saw teeth t on thedriving edge, it being apparent that the continuous length of theprepared metal stock is cut transversely at proper intervals for theproduction of the individual divergent fasteners S' shown in Figure 11.

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent is:

1. In a machineA of the class described, means for directing metal stockin a definite path, a plurality of rockable knife carriers positioned atthe respective sides of the path of feed of said metal stock, aplurality of knife blocks, one for each carrier, a plurality ofstationary knives, one for each knife block, said knives beingpositioned in oppositely inclined relation to the path of feed and atthe respective sides thereof, and means for separately adjusting theknife blocks and the knives in paths parallel to the faces of the metalstock, whereby the knives are adapted for operation upon the faceportions of metal stock adapted tobe fed within the stock directingmeans.

2. In a machine of the class described, means for directing metal stockin a definite path, a plurality of knife carriers positioned at therespective sides of the path 0f stock feed, a plurality of knife-blocksmounted in said knife carriers forI slidable movement with respectthereto, one knife block to each knifev carrier, a plurality of sta- Ciltionary knives, one foreach knife block, said stationary' knives beingpositioned at the respective sides of 'the pathV of stock feedlandinclined'th'ereto, and means for raising and lowering vthe knife' blocksand the stationary knives in paths paralleltc the plane of the stockguide. l l

In afmachine of 'the' class described, a guide channel, means forfeeding metal stock lwithin said guide channel, a plurality of knifecarriers positioned at opposite sides of the guide channel, a head blockmounted in each knife cariiena knife in each head block, and means forshifting the head block withV respect to the carrier. Y

4. In a machine of the class described, a

guide channel, means forV feeding metal stock within said guidechannel,a plurality of knife carriers positioned at the respective sides oftheguide channel and mounted for pivotalmovement,Y means for fixedlyretaining vsaid knife carrier in position relativelyt'o the guidechannel, and a shaving knife supported in each knife carrier .forl

adjustment therewith;v Y f 5; Ina machine-l of the class described,"aguide channel, meansfor feedinginetal stock Ifwithin said guidevchannel, a plurality of ,knife 'carriers positioned at opposite sidesof the guide channel, a head block mounted in each knife carrier, ayknife in each h'ead block,

means for retaining the knife` in adjusted position relatively to thehead-block, andV gating the metal stock subsequently to the Y shavingthereof, and means in activeti-elat-ion tothe sharpened edge of thecorrugatedV stock for cutting the said edge to produce'a saw toothformation thereon; c

v 7. Ina'machine of the class describecka guide channel', means forfeeding. metal stock therein, a plurality of knife carriers posi,-tioned adjacent the guide channel, a plu'- rality of head blocks, oneforeach knife cari'ier, a knife mounted in ,each head block, j

andmeans whereby Vthe knife is adapted to be raised andlovveredrelatively to the guide channel. Y j. j Y. I

VIn testimony whereof I have heijeto signed my name this 28th day ofSeptemben'lQQl.

,Y VINCENT iii-teoria.:k Y

